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Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Changes in mpg

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Old 08-31-2003, 11:15 PM
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Changes in mpg
I am about to purchase a turbo-back exhaust system, probably the Invidia system. What kind of changes can i expect to see on my mpg city/hwy?
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Old 09-01-2003, 05:00 PM
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mpg is dependant on how heavy u're right foot is
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Old 09-01-2003, 05:02 PM
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In theory, your engine is more efficient, and your mileage will go up.

In practice, your engine is more efficient, and your right foot will go down.
 
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Old 09-01-2003, 06:12 PM
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MBC without ECU, and exhaust = 10-12 mpg around town...ouch. Getting Cobb ecu soon.
 
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